Sarah Palin is firing back at Dick Cheney, saying it's a "shame" he believes that she was a "mistake" as the GOP vice presidential nominee four years ago.

The former Alaska governor, appearing on Fox News last night, said the mistake would have been had she "not answered the call" from Sen. John McCain. Cheney told ABC News that Palin did not meet the test of "being ready to take over. And I think that was a mistake."